document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=930376>Question 930376</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let x denote the time taken to run a road race. Suppose x is approximately normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes. If one runner is selected at random, what is the probability that this runner will complete this road race in 225 to 235 minutes </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #564967 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=564967\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> mean = 190min, SD = 21min,  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z+=+blue%28x+-+190%29%2Fblue%2821%29 ALIGN=MIDDLE  ALT=\"z+=+blue%28x+-+190%29%2Fblue%2821%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >    <BR>\n" );
document.write( "........<BR>\n" );
document.write( "P( 225 < x < 235) = P( 35/21 < z < 45/21) = normalcdf( 35/21, 45/21) = .0317<BR>\n" );
document.write( "....<BR>\n" );
document.write( "Using a TI calculator 0r similarly a Casio fx-115 ES plus </SPAN>\n" );
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